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    A small clinical trial in South Africa found that AstraZeneca’s Covid-19 vaccine doesn’t appear to protect recipients against mild and moderate illness from a fast-spreading new strain of the virus.

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    • #CoronavirusVaccine Numbers are small, but AstraZeneca trial r halted in South Africa ... no difference seen in placebo (20 cases) versus vaccinated (19 cases) group for mild-moderate COVID-19 (n=2,000) Median age was 31, so no severe cases seen. https://t.co/vlwCIYrmq1